feat(notifications): add configurable browser reminders

public/service-worker.js

@@ -1,4 +1,4 @@
-const CACHE = 'life-os-shell-v1.14.2';
+const CACHE = 'life-os-shell-v1.15.0';
 const SHELL = [
   '/', '/index.html', '/manifest.webmanifest', '/life-os-icon.svg'
 ];
@@ -29,3 +29,15 @@ self.addEventListener('fetch', event => {
     return response;
   })));
 });
+
+self.addEventListener('notificationclick', event => {
+  event.notification.close();
+  const app = ['today', 'tasks', 'system'].includes(event.notification.data?.app) ? event.notification.data.app : 'system';
+  event.waitUntil(self.clients.matchAll({ type: 'window', includeUncontrolled: true }).then(async clients => {
+    const existing = clients.find(client => new URL(client.url).origin === self.location.origin);
+    if (existing) {
+      await existing.focus();
+      existing.postMessage({ type: 'lifeos-open-app', app });
+    } else await self.clients.openWindow('/?app=' + encodeURIComponent(app));
+  }));
+});